The development of signal acquisition system used for the large area array of microchannel plate detector is very difficult. Multi-channel shared anode was put forward to solve this technical issue. Dual-channel shared anode and four-channel shared anode were designed.Acording to the basic standard that multi-channel Shared anode instead of single channel anode, signal transmission characteristics and collection efficiency were tested.Simulation experiment results show that signal transmission in multi-channel shared anode without attenuation and distortion, and the experimental results and simulation results are identical with each other; dual-channel shared anode′s total count rate and four-channel shared anode′s count rate are approximately equal to the sum of single channel anode count rate, the relative error of the count rate are 5.2%、7.4% respectively. Four-channel shared anode can replace single channel anode and dual-channel shared anode,and the number of channels about electronics acquisition system is reduced to 1/4 of the original.So ,the volume, weight and power of the whole acquisition system are reduced effectively.